Victorinox SWISS AIR FORCE Manual page 34

REINITIALIZING THE CHRONOGRAPH HANDS
Following an incorrect activate, violent impact or exposure to
a strong magnetic field, one of the chronograph counter hands
may fail to revert to its original position (zero). To reinitialize the hands,
proceed as follows:
Zero Reset of the Hour Counter Hand
A. Pull out the crown to position (2).
B. Press Push-piece A briefly until the hand reverts to the original
position (on 12).
Zero Reset of the Minute Counter Hand
A. Pull out the crown to position (2).
B. Press Push-piece B briefly until the hand reverts to the original
position (at noon.)
Zero Reset of the Seconds Counter Hand
A. Pull out the crown to position (3).
B. Press Push-piece A briefly until the hand reverts to the original
position (on 60).
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